/* =========================================================
   Grid90 — marketing site
   Serious, technical dark theme · topographic detailing
   ========================================================= */

:root {
  /* Surfaces — deep, cool, near-black teal */
  --bg:        #0c1316;
  --bg-1:      #0e171b;
  --bg-2:      #111e23;
  --surface:   #142229;
  --surface-2: #182b33;
  --surface-3: #1e343d;

  /* Lines */
  --line:      #21343c;
  --line-2:    #2b414b;

  /* Ink */
  --text:      #eef4f5;
  --text-2:    #a2b4bc;
  --text-3:    #6f858f;

  /* Accent — instrument teal */
  --accent:    #2fc6d6;
  --accent-2:  #17aebe;
  --accent-hi: #4bd8e6;
  --brand:     #00e0ef;
  --ink-on-accent: #05191d;

  /* Signal colours (match the app) */
  --signal-red:   #ef4d5a;
  --signal-green: #35d07f;

  --maxw:      1200px;
  --maxw-wide: 1320px;
  --radius:    14px;
  --radius-sm: 10px;
  --radius-lg: 22px;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--ink-on-accent); }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.wrap.wide { max-width: var(--maxw-wide); }

/* ===== Utility: data chip (grid refs, altitudes, coords) ===== */
.data {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--accent-hi);
}

/* ===== Brand ===== */
.brand-mark {
  display: inline-flex;
  width: 2.7em;
  height: 2.7em;
  color: var(--brand);
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-mark img { width: 100%; height: 100%; object-fit: cover; border-radius: 9px; display: block; }
.brand-word {
  font-weight: 800;
  letter-spacing: 0.18em;
  font-size: 1.05rem;
}
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--text); }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(12, 19, 22, 0.72);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--line);
  background: rgba(12, 19, 22, 0.9);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  color: var(--text-2);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s var(--ease);
}
.nav-links a:not(.btn):hover { color: var(--text); }
.nav-links a.btn { color: var(--ink-on-accent); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: var(--ink-on-accent);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.15s var(--ease), transform 0.15s var(--ease), box-shadow 0.2s var(--ease);
}
.btn:hover { background: var(--accent-hi); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(47,198,214,0.22); }
.btn-sm { padding: 9px 18px; font-size: 0.9rem; }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-2);
}
.btn-ghost:hover { background: var(--surface-2); border-color: var(--accent); box-shadow: none; }

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-width: 196px;
  padding: 11px 22px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease), transform 0.15s var(--ease);
}
.store-btn:hover { border-color: var(--accent); background: var(--surface-2); transform: translateY(-1px); }
.store-btn.disabled { opacity: 0.45; cursor: default; pointer-events: none; }
.store-btn.disabled:hover { border-color: var(--line-2); background: var(--surface); transform: none; }
.store-icon { width: 25px; height: 25px; flex: none; color: var(--text); }
.store-btn-text { display: flex; flex-direction: column; line-height: 1.15; }
.store-btn-kicker { font-size: 0.7rem; color: var(--text-3); letter-spacing: 0.03em; }
.store-btn-name { font-size: 1.12rem; font-weight: 700; color: var(--text); }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.cta-row.center { justify-content: center; }

/* ===== Eyebrow ===== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 22px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 82% 8%, rgba(47,198,214,0.10), transparent 55%),
    linear-gradient(180deg, var(--bg-1), var(--bg));
}
.hero-contours {
  position: absolute;
  inset: -12% -6% auto -6%;
  height: 120%;
  color: var(--accent);
  opacity: 0.15;
  pointer-events: none;
}
.hero-contours img, .hero-contours svg { width: 100%; height: 100%; }
.hero-grid-fade {
  position: absolute; inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  padding: 96px 32px 104px;
}
.hero-copy { max-width: 620px; }
.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin: 0 0 22px;
}
.hero h1 .hl { color: var(--accent); }
.lede {
  font-size: clamp(1.06rem, 1.5vw, 1.22rem);
  color: var(--text-2);
  max-width: 540px;
  margin: 0 0 34px;
}
.hero-note {
  color: var(--text-3);
  font-size: 0.86rem;
  margin: 22px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-note .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal-green); box-shadow: 0 0 8px var(--signal-green); }

/* Hero device */
.hero-device {
  position: relative;
  justify-self: center;
  width: min(340px, 82%);
}
.hero-device .device { transform: none; }
.float-chip {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  background: rgba(20, 34, 41, 0.82);
  border: 1px solid var(--line-2);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.35);
  font-size: 0.82rem;
  white-space: nowrap;
}
.float-chip .fc-ico { width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; flex: none; }
.float-chip .fc-ico svg { width: 15px; height: 15px; }
.float-chip strong { font-weight: 700; }
.float-chip small { display: block; color: var(--text-3); font-size: 0.72rem; }
.float-chip.tl { top: 6%; left: -36%; }
.float-chip.br { bottom: 12%; right: -34%; }
.fc-ico.teal { background: rgba(47,198,214,0.16); color: var(--accent-hi); }
.fc-ico.red  { background: rgba(239,77,90,0.16); color: var(--signal-red); }

/* ===== Device frame ===== */
.device {
  position: relative;
  border-radius: 32px;
  background: #05090b;
  padding: 8px;
  border: 1px solid var(--line-2);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.4),
    0 30px 60px -20px rgba(0,0,0,0.7),
    0 0 0 1px rgba(255,255,255,0.02) inset;
}
.device::before {
  content: "";
  position: absolute;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  width: 42px; height: 4px;
  border-radius: 3px;
  background: rgba(255,255,255,0.12);
  z-index: 2;
}
.device img {
  border-radius: 25px;
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Capability strip ===== */
.strip {
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
}
.strip-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 26px;
  padding: 22px 32px;
}
.strip-label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  margin-right: 6px;
}
.strip-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 0.86rem;
  color: var(--text-2);
  background: var(--surface);
}
.tag svg { width: 15px; height: 15px; color: var(--accent); }

/* ===== Sections ===== */
.section { padding: 104px 0; position: relative; }
.section-alt { background: var(--bg-1); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 640px; margin: 0 auto 64px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-title {
  font-size: clamp(1.85rem, 3.4vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 16px;
}
.section-sub {
  color: var(--text-2);
  font-size: 1.08rem;
  margin: 0;
}

/* ===== Alternating feature rows ===== */
.frow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.frow + .frow { margin-top: 120px; }
.frow.flip .frow-media { order: 2; }
.frow-media { display: flex; justify-content: center; position: relative; }
.frow-media .device { width: min(320px, 88%); }

.frow-copy { max-width: 500px; }
.frow-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}
.frow-kicker .num {
  color: var(--text-3);
}
.frow-copy h3 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
  margin: 0 0 16px;
}
.frow-copy > p {
  color: var(--text-2);
  font-size: 1.05rem;
  margin: 0 0 26px;
}
.feat-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 15px; }
.feat-list li {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  color: var(--text-2);
  font-size: 0.98rem;
}
.feat-list li svg {
  width: 20px; height: 20px; flex: none;
  color: var(--accent);
  margin-top: 2px;
}
.feat-list li strong { color: var(--text); font-weight: 600; }

/* decorative badge on media */
.media-badge {
  position: absolute;
  z-index: 2;
  bottom: 8%;
  padding: 11px 15px;
  background: rgba(20, 34, 41, 0.9);
  border: 1px solid var(--line-2);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 14px 34px rgba(0,0,0,0.4);
}
.media-badge.l { left: -6%; }
.media-badge.r { right: -6%; }
.media-badge .mb-val { font-family: var(--mono); font-weight: 700; font-size: 1.05rem; color: var(--text); }
.media-badge .mb-lbl { font-size: 0.72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }

/* ===== Secondary feature grid ===== */
.mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}
.mini {
  padding: 26px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease);
}
.mini:hover { border-color: var(--line-2); background: var(--surface-2); transform: translateY(-3px); }
.mini-ico {
  display: inline-flex;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: 10px;
  background: rgba(47,198,214,0.12);
  color: var(--accent);
  margin-bottom: 16px;
}
.mini-ico svg { width: 21px; height: 21px; }
.mini h4 { margin: 0 0 7px; font-size: 1.08rem; font-weight: 700; letter-spacing: -0.01em; }
.mini p { margin: 0; color: var(--text-2); font-size: 0.94rem; }

/* ===== Map styles gallery ===== */
.maps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.map-tile {
  margin: 0;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-2);
  background: var(--surface);
}
.map-tile img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.map-tile:hover img { transform: scale(1.05); }
.map-tile figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 26px 16px 13px;
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,0.72));
  display: flex;
  align-items: center;
  gap: 8px;
}
.map-tile figcaption::before {
  content: "";
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}

/* ===== Discover band ===== */
.discover-inner {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 64px;
  align-items: center;
}
.discover-media { display: flex; justify-content: center; }
.discover-media .device { width: min(310px, 82%); }
.stat-row { display: flex; flex-wrap: wrap; gap: 30px; margin-top: 30px; }
.stat b {
  display: block;
  font-family: var(--mono);
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
}
.stat span { color: var(--text-3); font-size: 0.86rem; }

/* ===== Why ===== */
.why-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}
.why-copy p { color: var(--text-2); font-size: 1.05rem; }
.why-list { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 18px; }
.why-list li { position: relative; padding-left: 30px; color: var(--text-2); }
.why-list li svg {
  position: absolute; left: 0; top: 3px;
  width: 19px; height: 19px; color: var(--accent);
}
.why-list li strong { color: var(--text); font-weight: 600; }
.why-visual {
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  overflow: hidden;
  background: var(--surface);
}
.why-visual img { width: 100%; }

/* ===== Screenshot gallery ===== */
.shots-scroller {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 32px 20px;
  margin: 0 -32px;
  -webkit-overflow-scrolling: touch;
  scrollbar-color: var(--line-2) transparent;
}
.shots-scroller::-webkit-scrollbar { height: 8px; }
.shots-scroller::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 999px; }
.shots-scroller::-webkit-scrollbar-track { background: transparent; }
.shot {
  flex: 0 0 auto;
  width: 260px;
  margin: 0;
  scroll-snap-align: center;
}
.shot .device { width: 100%; }

/* ===== Honest note ===== */
.note-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  padding: 56px 52px;
  position: relative;
  overflow: hidden;
}
.note-inner::before {
  content: "";
  position: absolute;
  inset: auto -30% -60% -30%;
  height: 160px;
  background: radial-gradient(50% 100% at 50% 100%, rgba(47,198,214,0.14), transparent 70%);
  pointer-events: none;
}
.note-kicker {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 14px;
}
.note h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.note-body { color: var(--text-2); font-size: 1.05rem; margin: 0 0 16px; }
.note-body strong { color: var(--text); }
.note-btn { margin-top: 18px; }

/* ===== Download CTA ===== */
.download {
  text-align: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(90% 120% at 50% 0%, rgba(47,198,214,0.12), transparent 60%),
    var(--bg-1);
  border-top: 1px solid var(--line);
}
.download-contours {
  position: absolute; inset: 0;
  color: var(--accent);
  opacity: 0.11;
  pointer-events: none;
}
.download-contours img { width: 100%; height: 100%; object-fit: cover; }
.download-inner { max-width: 660px; margin: 0 auto; position: relative; z-index: 1; }
.download-mark {
  display: inline-flex;
  width: 60px; height: 60px;
  color: var(--brand);
  margin-bottom: 22px;
}
.download-mark img { width: 100%; height: 100%; object-fit: cover; border-radius: 12px; display: block; }
.download h2 {
  font-size: clamp(1.9rem, 3.8vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 14px;
}
.download p { color: var(--text-2); font-size: 1.08rem; margin: 0 0 34px; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg);
  padding: 52px 0 40px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: start;
}
.footer-brand { display: inline-flex; align-items: center; gap: 11px; margin-bottom: 14px; }
.footer-tagline { color: var(--text-3); font-size: 0.92rem; max-width: 320px; margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px 30px; justify-content: flex-end; }
.footer-links a { color: var(--text-2); font-size: 0.92rem; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}
.footer-legal { color: var(--text-3); font-size: 0.84rem; margin: 0; }
.footer-disclaimer { color: var(--text-3); font-size: 0.78rem; margin: 0; opacity: 0.75; max-width: 520px; }

/* ===== Reveal on scroll (only when JS is active, so content is
   never stranded invisible if scripting is off or fails) ===== */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; padding: 76px 32px 84px; }
  .hero-copy { max-width: 620px; }
  .hero-device { width: min(300px, 70%); }
  .frow { grid-template-columns: 1fr; gap: 44px; }
  .frow.flip .frow-media { order: 0; }
  .frow + .frow { margin-top: 84px; }
  .frow-copy { max-width: none; }
  .discover-inner { grid-template-columns: 1fr; gap: 44px; }
  .discover-media { order: -1; }
  .why-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 620px) {
  .wrap { padding: 0 20px; }
  .nav-links { gap: 14px; }
  .nav-links a:not(.btn) { display: none; }
  .section { padding: 74px 0; }
  .section-head { margin-bottom: 46px; }
  .hero-inner { padding: 60px 20px 70px; }
  .float-chip.tl { left: -4%; top: 4%; }
  .float-chip.br { right: -4%; }
  .media-badge.l { left: 2%; }
  .media-badge.r { right: 2%; }
  .cta-row .store-btn { flex: 1 1 100%; }
  .note-inner { padding: 40px 24px; }
  .shots-scroller { padding-left: 20px; padding-right: 20px; margin: 0 -20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}